Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

High Pressure Sensor / Switch: Specifications

High Side Cut-Off Switches For R12 Closes At:
High-pressure closure 20 bar (290 psi)
Engine cooling fan (FC), low speed 15 bar (218 psi)
Engine cooling fan (FC), high speed 20 bar (290 psi)

High Side Cut-Off Switches For R12 Opens At:
High-pressure closure 28 bar (406 psi)
Engine cooling fan (FC), low speed 11 bar (160 psi)
Engine cooling fan (FC), high speed 16 bar (232 psi)

High Side Cut-Off Switches For 134a Closes At:
High-pressure closure 20 bar (290 psi)
Engine cooling fan (FC), low speed 18 bar (261 psi)
Engine cooling fan (FC), high speed 23 bar (334 psi)

High Side Cut-Off Switches For 134a Opens At:
High-pressure closure 30 bar (435 psi)
Engine cooling fan (FC), low speed 14 bar (203 psi)
Engine cooling fan (FC), high speed 19 bar (276 psi)